Ruby China
  • [北京][2012年12月2日] Happycasts: 线下活动，web 开发培训 at 2012年11月30日

    北京有这么多活动啊，帝都的人真幸福

  • 是不是最好别在 windows 下做开发？ at 2012年11月29日

    用虚拟机的话好像可以在 Windows 下写代码，在 Linux 调试，论坛里的相关帖子 http://ruby-china.org/topics/2553 http://ruby-china.org/topics/3327

  • 怎么才能活得快乐？ at 2012年11月21日

    #3 楼 @AlphaLiu 写代码写到不缺钱用，这也快乐了

  • 分享下我最近做的网站吧 (第一次借到一本书) at 2012年11月20日

    和这个http://bookfor.us/很像啊

  • 我的讲稿 Ruby Arduino Hacking at 2012年11月19日

    我正在做一个 Arduino 小车，Ruby 可以派上用场了

  • RubyConfChina2012 第一天花絮图片 at 2012年11月18日

    #3 楼 @fsword 大神

  • 被 Arduino 整的挺兴奋，估计明天爬不起来了。 at 2012年11月18日

    终于有人谈到 Arduino 了，我用 Arduino 做了一个可以用安卓手机遥控的小车，好像 RubyConfChina 里 QuakeWang 就是讲的 ruby arduino hacking - 串口通讯，很好的学习材料

  • Rabel 官方网站遭遇 DoS 攻击 at 2012年11月16日

    什么叫 Dos 攻击

  • SAE 的 Ruby 平台邀请码现场发放，算不算福利？ at 2012年11月14日

    #2 楼 @lgn21st #3 楼 @woaigithub #4 楼 @virgil 很大的福利啊，同时求推荐成为普通开发者，http://sae.sina.com.cn/?m=home&a=devlevel&level=normal_level&voteme=Ddjfcb

  • 分享一个自己做的 ruby-china-clone，新手可以交换一下意见 at 2012年11月13日

    是这样吗？

  • 分享一个自己做的 ruby-china-clone，新手可以交换一下意见 at 2012年11月13日

    还不能显示帖子

  • 这个 Bug 挺有意思的 at 2012年11月07日

    ID 和 Name 都是 account

  • 能不能不学 JavaScript 直接学 CoffeeScript？ at 2012年11月07日

    看来，我还是要从 JavaScript 学起啊，多谢了

  • RubyConfChina 2012 参会指南 at 2012年11月07日

    我看到了 Ruby Arduino Hacking，原来还可以这么用啊，Yeelink 就是这样实现的吧

  • undefined method `gsub' for nil:NilClass at 2012年11月04日

    #20 楼 @huacnlee #22 楼 @tiseheaini 我把 routes.rb 里面的一句 root :to => 'posts#index', as: 'post' 换做 root :to => 'posts#index' 就正常了，这是什么原因？

  • 新手问题 (已搞定) at 2012年11月04日

    <%= link_to "删除", feed_item, method: :delete, data: { confirm: "你确定?"}, title: feed_item.content, :class=>"icon-remove" %>

  • 新手问题 (已搞定) at 2012年11月04日

    用 Bootstrap 见http://wrongwaycn.github.com/bootstrap/docs/components.html

  • 北京清華大學 RubyGems 鏡像 at 2012年11月04日

    不是教育网有没有问题

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #20 楼 @huacnlee 去掉之后还是不行，还是这个问题

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    @huacnlee Full Trace:

    /home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/cgi/util.rb:7:in `escape'
activesupport (3.2.7) lib/active_support/core_ext/object/to_query.rb:10:in `to_query'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:52:in `block in to_param'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `each'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `collect'
activesupport (3.2.7) lib/active_support/core_ext/object/to_param.rb:51:in `to_param'
actionpack (3.2.7) lib/action_dispatch/http/url.rb:47:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:590:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/url_for.rb:148:in `url_for'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:107:in `url_for'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:213:in `post_path'
actionpack (3.2.7) lib/action_dispatch/routing/polymorphic_routes.rb:129:in `polymorphic_url'
actionpack (3.2.7) lib/action_dispatch/routing/polymorphic_routes.rb:135:in `polymorphic_path'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:111:in `url_for'
actionpack (3.2.7) lib/action_view/helpers/url_helper.rb:242:in `link_to'
app/views/posts/index.html.erb:6:in `block in _app_views_posts_index_html_erb___207551636_84847140'
activerecord (3.2.7) lib/active_record/relation/delegation.rb:6:in `each'
activerecord (3.2.7) lib/active_record/relation/delegation.rb:6:in `each'
app/views/posts/index.html.erb:3:in `_app_views_posts_index_html_erb___207551636_84847140'
actionpack (3.2.7) lib/action_view/template.rb:145:in `block in render'
activesupport (3.2.7) lib/active_support/notifications.rb:125:in `instrument'
actionpack (3.2.7) lib/action_view/template.rb:143:in `render'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template'
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:45:in `render_template'
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:18:in `render'
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:36:in `render_template'
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:17:in `render'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:110:in `_render_template'
actionpack (3.2.7) lib/action_controller/metal/streaming.rb:225:in `_render_template'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:103:in `render_to_body'
actionpack (3.2.7) lib/action_controller/metal/renderers.rb:28:in `render_to_body'
actionpack (3.2.7) lib/action_controller/metal/compatibility.rb:50:in `render_to_body'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:88:in `render'
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render'
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `block in ms'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/benchmark.rb:295:in `realtime'
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `ms'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block in render'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime'
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:39:in `render'
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (3.2.7) lib/action_controller/metal/mime_responds.rb:196:in `respond_to'
app/controllers/posts_controller.rb:12:in `index'
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.7) lib/abstract_controller/base.rb:167:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (3.2.7) lib/active_support/callbacks.rb:436:in `_run__881899361__process_action__894307140__callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.7) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.7) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.7) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.7) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.7) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.7) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.4) lib/journey/router.rb:68:in `block in call'
journey (1.0.4) lib/journey/router.rb:56:in `each'
journey (1.0.4) lib/journey/router.rb:56:in `call'
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:600:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.1) lib/rack/etag.rb:23:in `call'
rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/cookies.rb:338:in `call'
activerecord (3.2.7) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `_run__821701562__call__524177637__callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.7) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.7) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.7) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.7) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.7) lib/rails/engine.rb:479:in `call'
railties (3.2.7) lib/rails/application.rb:220:in `call'
rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.7) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/victor/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #16 楼 @huacnlee

  • undefined method `gsub' for nil:NilClass at 2012年11月03日

    #4 楼 @huacnlee log 显示如下：

    Started GET "/" for 127.0.0.1 at 2012-11-03 11:21:47 +0800
Connecting to database specified by database.yml
Processing by PostsController#index as HTML
  Mainboard Load (0.6ms)  SELECT `mainboards`.* FROM `mainboards` 
  Post Load (0.4ms)  SELECT `posts`.* FROM `posts` ORDER BY created_at desc LIMIT 10 OFFSET 0
  Rendered posts/index.html.erb within layouts/application (52.5ms)
Completed 500 Internal Server Error in 224ms

ActionView::Template::Error (undefined method `gsub' for nil:NilClass):
    3: <% @posts.each do |post| %>
    4:     <div class="post-line">
    5:       <div class="title">
    6:       <%= link_to post.title, post %>
    7:       </div>
    8:       <div class="info">
    9:         由<a href="/users/<%= post.user_id %>"><%= User.find(post.user_id).username %></a>发布于<%= post.created_at %> |
  app/views/posts/index.html.erb:6:in `block in _app_views_posts_index_html_erb___578724762_89298580'
  app/views/posts/index.html.erb:3:in `_app_views_posts_index_html_erb___578724762_89298580'
  app/controllers/posts_controller.rb:12:in `index'


  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/_trace.erb (6.0ms)
  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.0ms)
  Rendered /home/victor/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (14.2ms)
  • 以"京东充值漏洞"聊聊测试驱动开发 at 2012年11月02日

    怎么发现的

  • Linux 在线学习及问答网站上线，仿 Codecademy 和 Teamtreehouse 风格，大家拍砖~~ at 2012年10月31日

    能不能提供其他的账户登录呢 比如微博，github 等等

  • 最近开始写博客，发现一个在线的 Markdown editor 还不错,推荐一下，不知道大家用的什么呢？ at 2012年10月28日

    http://daringfireball.net/projects/markdown/dingus